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Bulletin issued at 04:02 HKT 18/Oct/2019

At 4 a.m. at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 81 per cent.

The air temperatures at other places were:

King's Park 25 degrees;
Wong Chuk Hang 25 degrees;
Ta Kwu Ling 23 degrees;
Lau Fau Shan 24 degrees;
Tai Po 23 degrees;
Sha Tin 25 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 23 degrees;
Sai Kung 25 degrees;
Cheung Chau 24 degrees;
Chek Lap Kok 26 degrees;
Tsing Yi 25 degrees;
Shek Kong 23 degrees;
Tsuen Wan Ho Koon 22 degrees;
Tsuen Wan Shing Mun Valley 24 degrees;
Hong Kong Park 25 degrees;
Shau Kei Wan 24 degrees;
Kowloon City 24 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 25 degrees;
Stanley 25 degrees;
Kwun Tong 25 degrees;
Sham Shui Po 25 degrees;
Kai Tak Runway Park 25 degrees;
Yuen Long Park 24 degrees;
Tai Mei Tuk 23 degrees.

Between 2:45 and 3:45 a.m., the rainfall recorded in various regions were:

Islands District 0 to 6 mm;
Yuen Long 0 to 3 mm;
Tai Po 0 to 2 mm.


Note: The data above is provisional. Only limited data validation has been carried out.


Climatological Information for 18 Oct

Regional Weather in Hong Kong

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Hong Kong Climatology


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Bulletin updated at 03:45 HKT 18/Oct/2019

Here is the latest weather bulletin issued by the Hong Kong Observatory.

The northeast monsoon is affecting southern China.

The area of low pressure over the seas to the east of the Philippines has intensified into a tropical depression and was named Neoguri. At 4 a.m., Neoguri was centred about 1100 kilometres east-northeast of Manila. It is forecast to be slow-moving, lingering over the vicinity to the east of Luzon Strait.

Weather forecast for today

Cloudy periods and isolated showers at first. The minimum temperature will be about 23 degrees in the urban areas, and a couple of degrees lower in the New Territories. Mainly fine and dry during the day with a maximum temperature of around 29 degrees. Moderate north to northeasterly winds, occasionally fresh offshore at first.

Outlook : Mainly fine in the following couple of days with relatively large temperature difference between day and night.


(The above forecast period is valid up to 23:59 HKT today, 18/10/2019; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 17/Oct/2019

N0 WARNING.

GENERAL SITUATION AT 170900 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 171300 UTC:

HONG KONG= N TO NE 4-5. LIGHT RAIN PATCHES AT FIRST. SEA UP TO 2 M. SWELL NE 2 M. TEMP 23-29 C. =
KWANGTUNG= NE 5-6, OCNL 7 IN E. LIGHT RAIN PATCHES AT FIRST. SEA 2-3 M, UP TO 4 M IN E. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 6-7. LIGHT RAIN PATCHES. SEA 3-4 M. SWELL NE 3-4 M. =
BASHI= NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 3-4 M. =
PRATAS= NE 5-6, OCNL 7. ISOL SHOWERS. SEA UP TO 4 M. SWELL NE 3 M. =
BALINTANG= NE 6-7. ISOL SHOWERS. SEA 3-4 M. SWELL NE 3-4 M. =
SCARBOROUGH= NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2-3 M. =
PARACEL= NE 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. SWELL NE 2-3 M. =
TONKIN= N TO NE 4-5. ISOL SHOWERS AND TS. SEA UP TO 2 M. =
DANANG= E TO NE 4-5, OCNL 6. ISOL SHOWERS AND TS. SEA UP TO 3 M. SWELL NE 2 M. =
NNNN
Abbreviations:
KT, VRB, SLW, FRQ - knot, variable, slow, frequent STNR, QSTNR, C - stationary, quasi-stationary, degrees celsius WKN, INTSF, INTST, NC - weaken, intensify, intensity, no change LGT, ISOL, SCT, OCNL - light, isolated, scattered, occasional CLD, DZ, TS - cloudy, drizzle, thunderstorm

The date and time are specified by a 6-digit number DDHHMM. DD stands for the day of month, HH represents the hour while MM indicates the minute in UTC.


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    • SOUTH CHINA COASTAL WATERS
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    South China Coastal Waters

    Current Weather | Local Weather Forecast | Regional Temperature Forecast in HK
    9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

    Bulletin issued at 03:30 HKT 18/Oct/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 3:30 a.m. on 18 October 2019

    Warnings:
    Strong winds in Nan'ao, Shanwei, south of Hong Kong and Shangchuan Dao.

    Weather Situation:
    The northeast monsoon is affecting the south China coastal waters.

    The area of low pressure over the seas to the east of the Philippines has intensified into a tropical depression and was named Neoguri. At 3 a.m., Neoguri with maximum sustained winds of about 45 kilometres per hour near its centre was located at 19.6 degrees north, 129.9 degrees east. It is forecast to be slow-moving, lingering over the vicinity to the east of Luzon Strait.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    North to northeast force 4 to 5.
    Isolated showers at first.
    Moderate seas.

    Nan'ao:
    Northeast force 5 to 6, occasionally force 7.
    Moderate to rough seas.

    Shanwei, South of Hong Kong and Shangchuan Dao:
    Northeast force 4 to 5, occasionally force 6.
    Moderate to rough seas.

    Outlook for the next 48 hours
    East to northeasterly winds of force 5 to 6, up to force 7 in east.

    Latest reports from south China coastal weather stations
    --------------------------------------------------------

    Waglan Island Wind east-northeast force 4
      Visibility 32 Kilometres

    Shantou Wind east force 2
      Visibility 30 Kilometres

    Dongsha Wind northeast force 4
      Visibility 10 Kilometres

    Huangmaozhou Wind northeast force 5

    Macau Wind north force 1
      Visibility 14 Kilometres

    Xisha Wind northeast force 3
      Visibility 16 Kilometres

  • Explanation of Seas or Sea Waves
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 01:30 HKT 18/OCT/2019
    (Next update at 9:00-9:30 HKT 18/OCT/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH CHINA COASTAL
     AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  040/5-10
       OFFSHORE:  060/10-15                            23-30
   B.   2000 FT:  060/10-15                            16
   C.   5000 FT:  080/15                               14
   D.  10000 FT:  340/10                               10
   E.  18000 FT:  280/15                               MS4
   F.  24000 FT:  240/20                               MS14
   G.  30000 FT:  240/30                               MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL.
   I. WEATHER       : 
      CLOUDY PERIODS WITH A FEW LIGHT RAIN PATCHES IN THE
      MORNING. MAINLY FINE DURING THE DAY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.
   K. VISIBILITY    : 10 KM. TEMPO 4000 M IN RAIN.
   L. 0 DEG. C LEVEL: 16000 FT      10 DEG. C LEVEL(S) : 10000 FT
   M. TURBULENCE    : MOD OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 1.5-2.0 M     SEA TEMPERATURE    : 28 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTHEASTERLY WINDS. MAINLY FINE.=

    ===================================================================
Note: The forecast could be updated before the next issue time 
whenever there is newly expected occurrence or non-occurrence 
of significant weather as described below which may be hazardous 
to aircraft within 100-km radius of Hong Kong:

(a) Change of the tropical cyclone category
(b) Strong, Gale, Storm, and Hurricane force winds
(c) Thunderstorm/CBs
(d) Severe gusts
(e) Severe turbulence
(f) Significant low stratus
(g) Fog or thick haze/sandstorm/duststorm 
    causing significant reduction of visibility
(h) Volcanic ash
(i) Radioactive cloud
===================================================================
    Aviation Weather Observation and Forecast Information for Hong Kong International Airport
    To know more about clouds, please see Commonly observed clouds in Hong Kong.

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    Significant Weather Information (SIGMET)

    The Airport Meteorological Office is responsible for monitoring hazardous weather and phenomena in the atmosphere that may affect the safety of aircraft operations within a designated airspace over the northern part of the South China Sea. Weather forecasters at the Airport Meteorological Office issues SIGMET information when hazardous weather and phenomena in the atmosphere such as thunderstorms, tropical cyclones, turbulence, icing occur or are expected to occur in the airspace.

    There is no Significant Weather Information (SIGMET)

    Please click here for more about the SIGMET

    Tropical Cyclone Warning
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    Tropical Cyclone Warning

    There is no tropical cyclone warning signal.

    For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.

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    TROPICAL CYCLONE WARNING FOR SHIPPING
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    Tropical Cyclone Warning for Shipping

    There is no tropical cyclone warning for shipping*.




    *Tropical cyclone warnings for shipping are issued by the Hong Kong Observatory for tropical cyclones located within the area bounded by 105E and 125E , 10N and 30N.




    For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.

    YESTERDAY'S WEATHER AND RADIATION LEVEL Skip to main content
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    Yesterday's Weather and Radiation Level

    Bulletin issued at 00:15 HKT 18/Oct/2019 
    HKO Readings & Radiation Level

Yesterday's Weather and Radiation Level:
------------------------------------------------------

Hong Kong Observatory
Maximum Air Temperature                     29.7 C
Minimum Air Temperature                     23.9 C
Grass Minimum Temperature                   23.3 C
Relative Humidity                        53 - 80 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2379.2 mm
Against an average of                     2306.7 mm

Other Stations                Min                  Max
King's Park                  23.5 C               28.7 C
Wong Chuk Hang               23.7 C               29.4 C
Ta Kwu Ling                  19.8 C               29.4 C
Lau Fau Shan                 21.6 C               29.7 C
Tai Po                       22.0 C               27.6 C
Sha Tin                      22.3 C               29.2 C
Tuen Mun                     22.3 C               29.7 C
Tseung Kwan O                21.7 C               29.8 C
Sai Kung                     23.7 C               28.0 C
Cheung Chau                  22.5 C               29.5 C
Chek Lap Kok                 24.1 C               30.3 C
Tsing Yi                     23.0 C               29.8 C
Shek Kong                    20.8 C               30.1 C
Tsuen Wan Ho Koon            20.9 C               27.7 C
Tsuen Wan Shing Mun Valley   22.1 C               29.6 C
Hong Kong Park               23.6 C               29.6 C
Shau Kei Wan                 22.9 C               29.9 C
Kowloon City                 22.9 C               29.1 C
Happy Valley                 23.5 C               30.5 C
Wong Tai Sin                 23.3 C               30.2 C
Stanley                      23.7 C               29.7 C
Kwun Tong                    22.7 C               29.4 C
Sham Shui Po                 22.9 C               30.6 C
Kai Tak Runway Park          23.6 C               29.6 C
Yuen Long Park               21.4 C               30.9 C
Tai Mei Tuk               22.6 C               29.7 C

Duration of sunshine (King's Park):              10.4 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 7.
 

Yesterday's (17 Oct 2019) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.09 to
0.14 microsievert per hour.  These are within the normal
range of fluctuation of the background radiation level in
Hong Kong (see Note). The average dose rates measured at the
radiation monitoring stations over various parts of the
territory were as follows :

Station                     Yesterday's average
                            (microsievert/hour)
Ping Chau                           0.09
Tap Mun                             0.09
Kat O                               0.11
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.13
Sai Wan Ho                          0.09
King's Park                         0.14
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.14

Note

      

    1. From readings taken at various locations in Hong Kong in the
past, the hourly mean ambient gamma radiation dose rate may
vary between 0.06 and 0.3 microsievert per hour. (1
microsievert = 0.000001 sievert = 0.001 millisievert)

    2. Temporal variations are generally caused by changes in
meteorological conditions such as rainfall, wind and
barometric pressure.

    3. Spatial variations are generally caused by differences in
the radioactive content of local rock and soil.

    4. The data displayed is provisional. Only limited data
validation has been carried out.
    Climatological Information for 17 Oct
     2003copy right image | Important notices | Privacy policy Last revision date: <18 Oct 2019> 

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